# HG changeset patch
# User Teemu Piippo <teemu@hecknology.net>
# Date 1529437510 -10800
# Node ID b48f3fd2664b8510172873a7bdd1d5f526950d09
# Parent  e76e219c48e99e24fcd4fab4157004749e6c9108
fixed generation of disc negatives

diff -r e76e219c48e9 -r b48f3fd2664b src/generics/functions.h
--- a/src/generics/functions.h	Tue Jun 19 22:00:46 2018 +0300
+++ b/src/generics/functions.h	Tue Jun 19 22:45:10 2018 +0300
@@ -118,24 +118,13 @@
 }
 
 /*
- * Extracts the sign of x.
+ * Extracts the sign of 'value'.
+ * From: https://stackoverflow.com/q/1903954
  */
 template<typename T>
-T sign(T x)
+int sign(T value)
 {
-	if (isZero(x))
-		return {};
-	else
-		return x / qAbs(x);
-}
-
-template<>
-inline int sign(int x)
-{
-	if (x == 0)
-		return 0;
-	else
-		return x / qAbs(x);
+	return (0 < value) - (value < 0);
 }
 
 /*
diff -r e76e219c48e9 -r b48f3fd2664b src/primitives.cpp
--- a/src/primitives.cpp	Tue Jun 19 22:00:46 2018 +0300
+++ b/src/primitives.cpp	Tue Jun 19 22:45:10 2018 +0300
@@ -368,7 +368,8 @@
 	{
 		LDTriangle* segment = model.emplace<LDTriangle>();
 		segment->setColor(MainColor);
-		segment->setVertex(0, {(circle[i].x1() >= 0.0) ? 1.0 : -1.0, 0.0, (circle[i].y1() >= 0.0) ? 1.0 : -1.0});
+		double angle = (i + 0.5) * 2.0 * pi / divisions;
+		segment->setVertex(0, {double(sign(cos(angle))), 0.0, double(sign(sin(angle)))});
 		segment->setVertex(1, {circle[i].x2(), 0.0, circle[i].y2()});
 		segment->setVertex(2, {circle[i].x1(), 0.0, circle[i].y1()});
 	}